[AK4621]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD=5V, DVDD=3.3V, TVDD=5V; VSS1=VSS2=0V; VREF=AVDD; fs=48kHz; Signal Frequency
=1kHz; 24bit Data; Measurement frequency=20Hz
∼
20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
ADC Analog Input Characteristics:
Resolution
-
-
24
Bits
Input Voltage
7)
Vpp
±2.62
±2.82
±3.02
Input Resistance
fs=48kHz
-
13
-
kΩ
fs=96kHz
-
13
-
kΩ
fs=192kHz
-
13
-
kΩ
S/(N+D)
fs=48kHz
-1dBFS
92
102
-
dB
BW=20kHz
-60dBFS
-
52
-
dB
fs=96kHz
-1dBFS
-
101
-
dB
BW=40kHz
-60dBFS
-
48
-
dB
fs=192kHz
-1dBFS
-
101
-
dB
BW=40kHz
-60dBFS
-
48
-
dB
Dynamic Range
(-60dBFS with A-weighted)
-
115
-
dB
S/N
(A-weighted)
105
115
-
dB
Interchannel Isolation
90
110
-
dB
Interchannel Gain Mismatch
-
0
0.3
dB
Gain Drift
-
20
-
ppm/°C
Power Supply Rejection
8)
-
50
-
dB
DAC Analog Output Characteristics:
Parameter
min
typ
max
Units
Resolution
-
-
24
Bits
Dynamic Characteristics
S/(N+D)
fs=48kHz
−1dBFS
90
100
-
dB
BW=20kHz
-
52
-
dB
−60dBFS
fs=96kHz
−1dBFS
-
97
-
dB
BW=40kHz
-
49
-
dB
−60dBFS
fs=192kHz
−1dBFS
-
97
-
dB
BW=40kHz
-
49
-
dB
−60dBFS
-
115
-
dB
Dynamic Range (−60dBFS with A-weighted) (Note
9, Note 10)
S/N
(A-weighted) (Note
107
115
-
dB
Interchannel Isolation (1kHz)
90
110
-
dB
DC Accuracy
Interchannel Gain Mismatch
-
0
0.3
dB
Gain Drift
-
20
-
ppm/°C
Output Voltage
Vpp
±2.6
±2.8
±3.0
Load Capacitance
-
-
25
pF
Load Resistance
2
-
-
kΩ
Note 7. Full scale (0dB) of the input voltage. Vin (typ) =
±2.82Vpp
x VREF/5.
Note 8. PSR is applied to AVDD, DVDD, TVDD with 1kHz, 50mVpp. VREF pin is held a constant voltage.
Note 9. 100dB at 16bit data and 114dB at 20bit data.
Note 10. By
External LPF Circuit Example 2.
Note 11. S/N does not depend on input bit length.
Note 12. The voltage on VREF is held +5V externally.
Note 13. Full scale voltage (0dB). Output voltage scales with the voltage of VREF.
AOUT (typ.@0dB) = (AOUT+) - (AOUT-) = 5.6Vpp x VREF/5.
Note 14. For AC-load.
MS1258-E-01
-7-
2011/01
AKM [ ASAHI KASEI MICROSYSTEMS ]
